Felix Arvid Ulf Kjellberg, known as PewDiePie is a Swedish YouTube publisher, web-based comedian and producer. He is most popular for his Let’s Play vlogs and commentaries especially focused on the games with horror themes, such as Silent Hill and Dead Island, for example. He increased his popularity by launching his own multi-channel network, Revelmode. His popularity leads to an increased sales of a game he’s playing.

KSI

Olajide “JJ” Olatunji, or KSI as he’s named in the gaming world is famous for his FIFA gameplay commentary. Not long ago, KSI enriched his channel content with pranks, comical shorts/skits and soccer-related real-life challenges, pranks, but gaming still remains the focus of his channel. In a Variety article, KSI was ranked as the most influential social media personality among younger population.

The Syndicate Project

The Syndicate Project was created in 2010 by Tom Cassell who is a British vlogger and YouTuber. This channel mainly focused on the games such as Call of Duty: Modern Warfare 2 and Halo Let’s Play gaming videos, but recently he included Minecraft, Call of Duty: Black Ops Zombies, unboxing videos of popular first-person shooter games, real-life adventure videos (like skydiving) and reaction videos. Cassell runs a Twitch channel which is the most followed channel on the website.

Vanoss Gaming

Vanoss Gaming is a Canadian gamer named Evan Fong. His channel is full of videos where he plays games like Grand Theft Auto, Call of Duty, Skate 3, Dead Rising, and Garry’s Mod, but also videos with specific moments that some people find funny. Due to his popularity, Fong was nominated for a “Trending Gamer of the Year” award in 2014, and currently has more than 22 Million subscribers.

Captain Sparklez whose real name is Jordan Maron is the owner of the YouTube gaming channel that is popular for videos of Call of Duty, Portal Happy Wheels and Left 4 Dead 2. Maron’s success has become even greater from his artistic expressions that “cover” pop songs using Minecraft.

Mega64

Mega64 is a channel created by Rocco Botte, Derrick Acosta, and Shawn Chatfield. Mega64 parodies popular video games, usually in a public setting with plenty of oblivious bystanders. This channel is over nine years old, which means there is a rich content to explore.

TheDiamondMinecart

Dan Middleton known as TheDiamondMinecart is an English gamer and, one of the most popular YouTubers in the UK. He started with playing games like Pokémon, but he is now famous for his Minecraft videos, which make the majority of his videos today. Plants vs. Zombies and Garry’s Mod are also covered by him, and he occasionally does vlogs.

This is certainly not an exhaustive list since new gamers pop up every day but it will give you a good sense of where to start if you’re into this kind of content.